/* ═══════════════════════════════════════════════
   CASE STUDY — styles compartilhados
   Depende de styles.css (carregado antes)
═══════════════════════════════════════════════ */

/* ─── Hero do case ──────────────────────────── */
.case-hero {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: clamp(7rem, 12vw, 11rem) var(--px) clamp(3rem, 5vw, 4.5rem);
    border-bottom: 1px solid var(--border);
    background:
        radial-gradient(ellipse 55% 60% at 0% 100%, rgba(79, 138, 255, 0.07) 0%, transparent 65%),
        var(--bg);
}

.case-hero__back {
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 0.06em;
    color: var(--muted);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: clamp(2.5rem, 5vw, 4rem);
    transition: color 0.3s, gap 0.35s var(--ease-out);
    width: fit-content;
}

.case-hero__back:hover {
    color: var(--text);
    gap: 0.85rem;
}

.case-hero__back-arrow {
    font-style: normal;
    display: inline-block;
}

.case-hero__content {}

.case-hero__num {
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    color: var(--muted);
    text-transform: uppercase;
    display: block;
    margin-bottom: 1.25rem;
}

.case-hero__title {
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(3.5rem, 10vw, 11rem);
    line-height: 0.9;
    letter-spacing: -0.025em;
    margin-bottom: 2rem;
}

.case-hero__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ─── Overview ──────────────────────────────── */
.case-overview {
    padding: clamp(3rem, 5vw, 5rem) var(--px);
    border-bottom: 1px solid var(--border);
}

.case-overview__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.case-overview__item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
}

.case-overview__label {
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
}

.case-overview__value {
    font-size: 0.88rem;
    font-weight: 300;
    line-height: 1.5;
}

/* ─── Seções internas do case ───────────────── */
.case-section {
    padding: var(--py) var(--px);
    border-bottom: 1px solid var(--border);
}

.case-section__label {
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    display: block;
    margin-bottom: 2.5rem;
}

/* ─── Desafio ───────────────────────────────── */
.case-challenge__quote {
    font-family: var(--font-serif);
    font-weight: 300;
    font-style: italic;
    font-size: clamp(1.6rem, 3.5vw, 3.5rem);
    line-height: 1.25;
    letter-spacing: -0.015em;
    max-width: 22ch;
    margin-bottom: 3rem;
}

.case-challenge__body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 5rem);
}

.case-challenge__text {
    font-size: 0.88rem;
    line-height: 1.8;
    color: var(--muted);
}

/* ─── Processo ──────────────────────────────── */
.case-process__steps {
    display: flex;
    flex-direction: column;
    gap: clamp(3rem, 6vw, 6rem);
}

.case-step {
    display: grid;
    grid-template-columns: 4rem 1fr 1.5fr;
    gap: clamp(1.5rem, 4vw, 4rem);
    align-items: start;
}

.case-step__num {
    font-size: 0.72rem;
    color: var(--muted);
    font-weight: 400;
    letter-spacing: 0.1em;
    padding-top: 0.3rem;
}

.case-step__info {}

.case-step__title {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 2vw, 2rem);
    font-weight: 300;
    letter-spacing: -0.01em;
    margin-bottom: 0.9rem;
}

.case-step__desc {
    font-size: 1rem;
    color: var(--muted);
    line-height: 1.75;
}

.case-step__image .placeholder,
.case-step__image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

/* ─── Solução ───────────────────────────────── */
.case-solution__screens {
    display: grid;
    gap: clamp(1rem, 2vw, 2rem);
}

.case-solution__screens--2col {
    grid-template-columns: 1fr 1fr;
}

.case-solution__screens--3col {
    grid-template-columns: 1fr 1fr 1fr;
}

.case-solution__caption {
    font-size: 0.72rem;
    color: var(--muted);
    letter-spacing: 0.04em;
    margin-top: 0.6rem;
    font-style: italic;
}

.case-solution__text {
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.8;
    max-width: 60ch;
    margin: 2.5rem 0 3rem;
}

.case-solution__full {
    margin-bottom: clamp(1.5rem, 3vw, 3rem);
}

.case-solution__full img,
.case-solution__screens img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}

/* ─── Resultado ─────────────────────────────── */
.case-results__metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.case-metric {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.case-metric__value {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw, 5rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1;
    color: var(--accent);
    text-shadow: 0 0 30px rgba(79, 138, 255, 0.25);
    margin-bottom: 0.5rem;
}

.case-metric__label {
    font-size: 1rem;
    color: var(--muted);
    font-weight: 400;
    line-height: 1.5;
}

.case-results__text {
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.8;
    max-width: 60ch;
}

/* ─── Próximo projeto ───────────────────────── */
.case-next {
    padding: clamp(4rem, 8vw, 8rem) var(--px);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.case-next__label {
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

.case-next__link {
    display: inline-flex;
    align-items: baseline;
    gap: 1.5rem;
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(2rem, 6vw, 7rem);
    line-height: 1;
    letter-spacing: -0.03em;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.06em;
    transition: color 0.4s, border-color 0.4s, gap 0.4s var(--ease-out);
}

.case-next__link:hover {
    color: var(--accent);
    border-color: var(--accent);
    gap: 2.5rem;
    text-shadow: 0 0 50px rgba(79, 138, 255, 0.15);
}

.case-next__arrow {
    font-family: var(--font-sans);
    font-size: 0.4em;
}

/* ─── Responsivo ────────────────────────────── */
@media (max-width: 900px) {
    .case-overview__grid {
        grid-template-columns: 1fr 1fr;
    }

    .case-step {
        grid-template-columns: 3rem 1fr;
    }

    .case-step__image {
        grid-column: 2;
    }

    .case-solution__screens--3col {
        grid-template-columns: 1fr 1fr;
    }

    .case-results__metrics {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    .case-challenge__body {
        grid-template-columns: 1fr;
    }

    .case-overview__grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.25rem;
    }

    .case-step {
        grid-template-columns: 1fr;
    }

    .case-step__num {
        display: none;
    }

    .case-step__image {
        grid-column: 1;
    }

    .case-solution__screens--2col,
    .case-solution__screens--3col {
        grid-template-columns: 1fr;
    }

    .case-results__metrics {
        grid-template-columns: 1fr 1fr;
    }
}